52201128 has 32 divisors (see below), whose sum is σ = 149146560. Its totient is φ = 14914560.

The previous prime is 52201111. The next prime is 52201129. The reversal of 52201128 is 82110225.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (52201129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155193 + ... + 155528.

It is an arithmetic number, because the mean of its divisors is an integer number (4660830).

Almost surely, 2^52201128 is an apocalyptic number.

It is an amenable number.

52201128 is an abundant number, since it is smaller than the sum of its proper divisors (96945432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52201128 is a wasteful number, since it uses less digits than its factorization.

52201128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310737 (or 310733 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 52201128 is about 7225.0348096047. The cubic root of 52201128 is about 373.7317225396.

The spelling of 52201128 in words is "fifty-two million, two hundred one thousand, one hundred twenty-eight".